1. The investigation of biological characteristics of the precicus and rare plant: dove tree (Davidia involucraata Bail).
2. Vegetative investigation in He Bei province and North-east of China.
3. Using L.M. and E.M. to do some research about plant embryology and embryogenesis.
4. Male sterility in Arabidopsis thaliana and Xanthoceras folia Bunge.
5. To study some relationships between anatomical structure and resistance to insects.